MASTER PLAN OF DRAINAGE CITY OF CHINO FINAL REPORT NOVEMBER, 1993 MASTER PLAN OF DRAINAGE CITY OF CHINO, CALIFORNIA Prepared for: CITY OF CHINO PUBLIC WORKS DEPARTMENT 13220 Central Avenue Chino, California 91710 Prepared by: BSI Consultants, Inc. 2001 East First Street Santa Ana, California 92705 (714) 568-7300 Under the supervision of: Mohammed N.K. Rowther Date TABLE OF CONTENTS PAGE I INTRODUCTION I.1 GENERAL.......................................................................................................................................................... I-1 I.2 STUDY AREA ................................................................................................................................................... I-4 I.3 STUDY APPROACH........................................................................................................................................ I-5 I.4 ACKNOWLEDGEMENTS .............................................................................................................................. I-7 II CONCLUSIONS AND RECOMMENDATIONS II.1 CONCLUSIONS ............................................................................................................................................ II-1 II.2 RECOMMENDATIONS ............................................................................................................................... II-4 III STUDY AREA III.1 WATERSHED...............................................................................................................................................III-1 III.2 DRAINAGE BASINS ...................................................................................................................................III-1 III.3 DRAINAGE AREAS AND SYSTEMS .......................................................................................................III-4 III.4 SURFACE FLOW PATTERNS...................................................................................................................III-4 III.5 EXISTING DRAINAGE SYSTEM..............................................................................................................III-4 III.6 LAND USE..................................................................................................................................................III-10 III.7 STREET FLOW CAPACITY CURVES...................................................................................................III-19 IV HYDROLOGIC CRITERIA IV.1 GENERAL.....................................................................................................................................................IV-1 IV.2 DESIGN STORM .........................................................................................................................................IV-1 IV.3 RUNOFF COEFFICIENT...........................................................................................................................IV-2 IV.4 RAINFALL INTENSITY..............................................................................................................................IV-2 V HYDRAULIC CRITERIA V.1 GENERAL .......................................................................................................................................................V-1 V.2 MANHOLES ...................................................................................................................................................V-1 V.3 LATERALS ......................................................................................................................................................V-2 V.4 MINIMUM PIPE SIZE....................................................................................................................................V-3 V.5 MINIMUM SLOPE.........................................................................................................................................V-3 V.6 ANGLE OF CONFLUENCE ........................................................................................................................V-3 V.7 INLET LOCATIONS......................................................................................................................................V-4 V.8 OUTLET STRUCTURES..............................................................................................................................V-4 VI MASTER PLANNED FACILITIES VI.1 GENERAL ......................................................................................................................................................VI-1 VI.2 SYSTEM DESCRIPTIONS...........................................................................................................................VI-2 VII PROJECT PRIORITY VII.1 GENERAL.................................................................................................................................................. VII-1 VII.2 PROJECT PRIORITY............................................................................................................................... VII-2 VII.3 CAPITAL COST ESTIMATES ................................................................................................................ VII-2 VIII FINANCING OF IMPROVEMENTS VIII.1 GENERAL ...............................................................................................................................................VIII-1 VIII.2 METHODS OF FINANCING...............................................................................................................VIII-1 P:\WP51DATA\SPECS\ROWTHER\RPRTCHNO.FNL FIGURES PAGE FIGURE I-1, VICINITY MAP................................................................................................................................. I-2 FIGURE II-1, FACILITIES MAP - NORTHERN BASIN ...................................................................................II-2 FIGURE II-2, FACILITIES MAP - WESTERN BASIN....................................................................................... II-5 FIGURE II-3, FACILITIES MAP - EASTERN BASIN ........................................................................................ II-7 FIGURE II-4, FACILITIES MAP - EASTERN BASIN ........................................................................................ II-8 FIGURE III-1, BASIN BOUNDARY MAP .........................................................................................................III-2 FIGURE III-2, SURFACE FLOW MAP - NORTHERN BASIN.......................................................................III-5 FIGURE III-3, SURFACE FLOW MAP - WESTERN BASIN ..........................................................................III-6 FIGURE III-4, SURFACE FLOW MAP - EASTERN BASIN............................................................................III-7 FIGURE III-5, SURFACE FLOW MAP - EASTERN BASIN............................................................................III-8 FIGURE III-6, EXISTING FACILITIES MAP - NORTHERN BASIN............................................................ III-9 FIGURE III-7, EXISTING FACILITIES MAP - WESTERN BASIN...............................................................III-11 FIGURE III-8, EXISTING FACILITIES MAP - EASTERN BASIN................................................................III-12 FIGURE III-9, EXISTING FACILITIES MAP - EASTERN BASIN................................................................III-13 FIGURE III-10, LAND USE MAP......................................................................................................................III-14 FIGURE IV-1, SOILS MAP...................................................................................................................................IV-3 FIGURE IV-2, ISOHYETALS - 10-YEAR 1 HOUR ...........................................................................................IV-4 FIGURE IV-3, ISOHYETALS - 100-YEAR 1 HOUR .........................................................................................IV-5 FIGURE IV-4, ISOHYETALS - 100-YEAR 6 HOUR .........................................................................................IV-6 FIGURE IV-5, ISOHYETALS - 100-YEAR 24 HOUR .......................................................................................IV-7 FIGURE VI-1 TO VI-80, SYSTEM MAPS ........................................................................................................ VI-26 FIGURE VII-1, PRIORITY MAP - NORTHERN BASIN ................................................................................ VII-4 FIGURE VII-2, PRIORITY MAP - WESTERN BASIN.................................................................................... VII-5 FIGURE VII-3, PRIORITY MAP - EASTERN BASIN ..................................................................................... VII-6 FIGURE VII-4, PRIORITY MAP - EASTERN BASIN ..................................................................................... VII-7 TABLES TABLE II-1, PLANNED FACILITIES - NORTHERN BASIN ........................................................................... II-3 TABLE II-2, PLANNED FACILITIES - WESTERN BASIN............................................................................... II-6 TABLE II-3, PLANNED FACILITIES - EASTERN BASIN ................................................................................ II-9 TABLE III-1, LAND USE CLASSIFICATION .................................................................................................III-15 TABLE III-2, LAND